Results 31 to 40 of about 130,686 (336)

Swings between rotation and accretion power in a millisecond binary pulsar [PDF]

, 2013
It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods.
A Papitto, A Papitto, A Patruno, A. Papitto, A. Possenti, A. Riggio, AM Archibald, AS Fruchter, BM Gaensler, C. Ferrigno, D Bhattacharya, D Chakrabarty, D Chakrabarty, D. F. Torres, DA Leahy, DC Backer, E. Bozzo, F Pacini, G. F. Wong, GS Bisnovatyi-Kogan, I. H. Stairs, J van Paradijs, J. M. Sarkissian, J. W. T. Hessels, JM Hartman, L Burderi, L Burderi, L Stella, L. Burderi, L. Pavan, L. Stella, M Burgay, M Ruderman, M. Burgay, M. D. Filipović, M. Falanga, M. H. Wieringa, MA Alpar, N. Rea, P. C. C. Freire, P. Romano, R Wijnands, RN Manchester, S Bogdanov, S Campana, S. Campana, S. M. Ransom, T Di Salvo, T. Di Salvo, V Radhakrishnan, WE Harris, WHG Lewin   +51 more
core   +3 more sources

Neutron star atmosphere composition: the quiescent, low‐mass X‐ray binary in the globular cluster M28 [PDF]

, 2012
Using deep Chandra observations of the globular cluster M28, we study the quiescent X-ray emission of a neutron star in a low-mass X-ray binary in order to constrain the chemical composition of the neutron star atmosphere and the equation of state of ...
M. Servillat, M. Servillat, C. Heinke, W. Ho, J. Grindlay, J. Hong, M. V. D. Berg, M. V. D. Berg, S. Bogdanov   +8 more
semanticscholar   +1 more source

High-Frequency Variability in Neutron-Star Low-Mass X-ray Binaries [PDF]

, 2020
Binary systems with a neutron-star primary accreting from a companion star display variability in the X-ray band on time scales ranging from years to milliseconds. With frequencies of up to ~1300 Hz, the kilohertz quasi-periodic oscillations (kHz QPOs) represent the fastest variability observed from any astronomical object.
Méndez, Mariano, Belloni, Tomaso M., Zhang, Chengmin   +2 more
openaire   +3 more sources

Enhanced optical activity 12 d before X-ray activity, and a 4 d X-ray delay during outburst rise, in a low-mass X-ray binary

, 2020
X-ray transients, such as accreting neutron stars, periodically undergo outbursts, thought to be caused by a thermal-viscous instability in the accretion disk.
A. Goodwin, D. Russell, D. Galloway, M. C. Baglio, M. C. Baglio, A. Parikh, D. Buckley, J. Homan, D. Bramich, J. Zand, C. Heinke, E. Kotze, D. Martino, A. Papitto, F. Lewis, F. Lewis, R. Wijnands   +16 more
semanticscholar   +1 more source

THE MASS AND RADIUS OF THE NEUTRON STAR IN THE BULGE LOW-MASS X-RAY BINARY KS 1731−260 [PDF]

, 2011
Measurements of neutron star masses and radii are instrumental in determining the equation of state of their interiors, understanding the dividing line between neutron stars and black holes, and obtaining accurate statistics of source populations in the ...
F. Özel, A. Gould, T. Güver
semanticscholar   +1 more source

Constraints on Neutron Star Structure from the Clocked X-Ray Burster 1RXS J180408.9−342058

The Astrophysical Journal, 2023
Type I X-ray bursts are rapid-brightening transient phenomena on the surfaces of accreting neutron stars (NSs). Some X-ray bursts, called clocked bursters, exhibit regular behavior with similar light-curve profiles in their burst sequences.
A. Dohi, W. B. Iwakiri, N. Nishimura, T. Noda, S. Nagataki, M. Hashimoto   +5 more
doaj   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
A. Collier Cameron, A. J. Norton, Akerlof, Alekseev, Alekseev, B. Enoch, Bejgman, Boller, Bouvier, Bouvier, Bouvier, Brancewicz, Brelstaff, C. A. Haswell, C. Hellier, Chrastina, Collier Cameron, Collier Cameron, D. J. Christian, D. M. Wilson, D. Pollacco, Deeter, Dempsey, Engle, Evans, Feast, Gershberg, Hall, Hall, Hartmann, I. Skillen, J. Irwin, J. P. Nicholas, Jeffries, K. Horne, Koen, Loomis, M. Gallaway, Meinunger, Monet, N. Parley, Neuhauser, P. J. Wheatley, Pallavicini, Pettersen, Pizzolato, Pribulla, Qian, R. A. Street, R. G. West, R. Ryans, Rosner, S. R. Kane, Schmidt, Schmidt, Selam, Skillen, Stanishev, Strassmeier, T. A. Lister, Tamuz, Turner, Vilhu, W. I. Clarkson, Walter, Wegner, Wheatley, Zhang   +67 more
core   +3 more sources

Accretion Disk Boundary Layers around Neutron Stars: X‐Ray Production in Low‐Mass X‐Ray Binaries [PDF]

The Astrophysical Journal, 2001
We present solutions for the structure of the boundary layer where the accretion disk meets the neutron star, which is expected to be the dominant source of high-energy radiation in low-mass X-ray binaries which contain weakly magnetized accreting neutron stars.
Popham, Robert, Sunyaev, Rashid
openaire   +2 more sources

Further Constraints on Variations in the Initial Mass Function from Low-mass X-ray Binary Populations [PDF]

, 2017
We present constraints on variations in the initial mass function (IMF) of nine local early-type galaxies based on their low-mass X-ray binary (LMXB) populations.
M. Peacock, S. Zepf, A. Kundu, T. Maccarone, B. Lehmer, C. Maraston, Anthony H. Gonzalez, R. Eufrasio, D. Coulter   +8 more
semanticscholar   +1 more source

Very hard states in neutron star low-mass X-ray binaries [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Accepted for publication in ...
Parikh, A.S., Wijnands, R., Degenaar, N., Altamirano, D., Patruno, A., Gusinskaia, N.V., Hessels, J.W.T.   +6 more
openaire   +7 more sources